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Post by jjgo1984 on Mar 19, 2013 4:55:38 GMT -5
After upgrading from a 39mm to 50mm bore, can't get it to start. Got fuel, spark & at least some compression, but I'm thinking it's gotta be the rings. how should I line up the gaps on the compression rings & oil control rings? the wavy middle ring of the oil control ring was slightly too long (~1mm) so i just overlapped it and it seemed fine... any ideas?  |
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Post by rune75 on Mar 19, 2013 6:44:01 GMT -5
Here's a really good video. You may not understand the language, but the video speaks for it self.
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Post by scootercapecod on Mar 19, 2013 7:03:27 GMT -5
Using a triangle pattern on the rings, align the oil ring with back of the head align the 2 other rings 120* apart from that to avert blow-by.
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Post by teddy554 on Mar 19, 2013 7:25:28 GMT -5
you should gap the rings before installing rings you should put them inside the cylinder and measure your ring gaps any to small you need to file down if to big discard and get a new one has far has the wavy i cant remember wither or not if should over lap but i think yes its locks the ends together but here is a good link scroll down to the ring part 49ccscoot.proboards.com/thread/350/big-bore-kit-installation |
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Post by jjgo1984 on Apr 6, 2013 23:46:00 GMT -5
thanks guys  |
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Post by alleyoop on Apr 6, 2013 23:59:04 GMT -5
Alleyoop  |
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Post by triker on Apr 7, 2013 0:33:12 GMT -5
This is how I align the ring gaps.
With the intake at 12 o-clock.
1st ring gap at 2 o-clock.
2nd ring gap at 10 o-clock.
Thin top oil ring gap at 5 o-clock.
middle wavy oil ring gap at 6 o-clock.
thin bottom oil ring gap at 7 o-clock.
Roy
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Post by tvnacman on Apr 7, 2013 0:48:23 GMT -5
i heard of a guy that rebuilt an engine he didn't know where the rings went so he left them out .
John
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Post by triker on Apr 7, 2013 1:00:19 GMT -5
i heard of a guy that rebuilt an engine he didn't know where the rings went so he left them out . John Wow!  I wonder if he ever got it to run? ;D Roy |
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..BAD TO THE BONE..
